Abstract: A centralizer, a device and a system. An example centralizer includes: a longitudinal axis, and first and second opposing end collars positioned around the axis of the centralizer; and a plurality of spring bows extending from the first end collar via a generally convex curved portion to the second end collar. A radial distance from an outwardly facing portion of the first end collar to the axis is: greater than a radial distance from a first outwardly facing portion of a spring bow of the plurality of spring bows, at a longitudinal axial position where the spring bow extends from the first end collar, to the axis; and less than a radial distance from a second outwardly facing portion of the spring bow, at a longitudinal axial position between the first end collar and the second end collar that is farthest from the axis, to the axis.

Abstract: Disclosed herein is a centralizer for being mounted around a centralizer sub body to form a centralizer sub. The centralizer comprises first and second opposing end collars arranged, in use, to be positioned around a longitudinal axis of the centralizer. The centralizer also comprises a plurality of spring bows extending from the first end collar to the second end collar. The first end collar may comprise first and second end regions arranged, in use, to face one another. The first and second opposing end regions may comprise first and second engaging elements respectively. The first end region may be configured to be connected, in use, to the second end region via the first and second engaging elements. Also disclosed is a centralizer sub and an engaging device for use in forming a centralizer.

Abstract: Disclosed herein is a centralizer for being mounted around a centralizer sub body to form a centralizer sub. The centralizer comprises first and second opposing end collars arranged, in use, to be positioned around a longitudinal axis of the centralizer. The centralizer also comprises a plurality of spring bows extending from the first end collar to the second end collar. The first end collar may comprise first and second end regions arranged, in use, to face one another. The first and second opposing end regions may comprise first and second engaging elements respectively. The first end region may be configured to be connected, in use, to the second end region via the first and second engaging elements. Also disclosed is a centralizer sub and an engaging device for use in forming a centralizer.

Abstract: A centralizer, a device and a system are disclosed. The centralizer has a longitudinal axis, and comprises first and second opposing end collars positioned around the axis of the centralizer, and a plurality of spring bows extending from the first end collar via a generally convex curved portion to the second end collar, wherein a radial distance from an outwardly facing portion of the first end collar to the axis is: greater than a radial distance from a first outwardly facing portion of a spring bow of the plurality of spring bows, at a longitudinal axial position where the spring bow extends from the first end collar, to the axis, and less than a radial distance from a second outwardly facing portion of the spring bow, at a longitudinal axial position between the first end collar and the second end collar that is farthest from the axis, to the axis.